/* http-client.c
*
* Copyright (c) 2000 Sean Walton and Macmillan Publishers. Use may be in
* whole or in part in accordance to the General Public License (GPL).
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*****************************************************************************/
/*** http-client.c ***/
/*** ***/
/*** This program shows what the HTTP server sends to the client. First, ***/
/*** it opens a TCP socket to the server. Then, it sends the request ***/
/*** "GET HTTP/1.0\n\n" (the second newline is needed for the ***/
/*** "message-end" message. Lastly it prints out the reply. ***/
/*****************************************************************************/
#include <stdarg.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <sys/socket.h>
#include <resolv.h>
#include <errno.h>
#define MAXBUF 1024
void PANIC(char *msg);
#define PANIC(msg) {perror(msg); abort();}
int main(int Count, char *Strings[])
{ int sockfd, bytes_read;
struct sockaddr_in dest;
char buffer[MAXBUF];
/*---Make sure we have the right number of parameters---*/
if ( Count != 3 )
PANIC(stderr, "usage: testport \n");
if ( (sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0 )
PANIC("Socket");
/*---Initialize server address/port struct---*/
bzero(&dest, sizeof(dest));
dest.sin_family = AF_INET;
dest.sin_port = htons(80); /*default HTTP Server port */
if ( inet_addr(Strings[1], &dest.sin_addr.s_addr) == 0 )
PANIC(Strings[1]);
/*---Connect to server---*/
if ( connect(sockfd, (struct sockaddr*)&dest, sizeof(dest)) != 0 )
PANIC("Connect");
sprintf(buffer, "GET %s HTTP/1.0\n\n", Strings[2]);
send(sockfd, buffer, strlen(buffer), 0);
/*---While there's data, read and print it---*/
do
{
bzero(buffer, sizeof(buffer));
bytes_read = recv(sockfd, buffer, sizeof(buffer), 0);
if ( bytes_read > 0 )
printf("%s", buffer);
}
while ( bytes_read > 0 );
/*---Clean up---*/
close(sockfd);
return 0;
}
|
